Cooling device for amphibious vehicle and amphibious vehicle

Abstract

This cooling device for an amphibious vehicle includes: a heat exchanger mounted in the amphibious vehicle; a coolant introduction passage through which cooling air or cooling water can be introduced from the outside to the heat exchanger as a coolant; a cooling air discharge passage through which the cooling air having passed through the heat exchanger can be discharged to a cooling air discharge portion communicating with the outside; and a cooling water discharge passage through which the cooling water having passed through the heat exchanger can be discharged to a cooling water discharge portion communicating with the outside. The cooling air discharge passage and the cooling water discharge passage are formed such that at least the cooling air discharge portion and the cooling water discharge portion are independent of each other.

The invention claimed is: 
     
       1. A cooling device for an amphibious vehicle, comprising:
 a heat exchanger mounted in the amphibious vehicle; 
 a one single coolant introduction passage that selectively passes cooling air or cooling water introduced from an outside to the heat exchanger as a coolant; 
 a cooling air discharge passage through which the cooling air having passed through the heat exchanger can be discharged to a cooling air discharge portion communicating with the outside; and 
 a cooling water discharge passage through which the cooling water having passed through the heat exchanger can be discharged to a cooling water discharge portion communicating with the outside, 
 wherein the cooling air discharge passage and the cooling water discharge passage are formed such that the cooling air discharge portion and the cooling water discharge portion are independent from each other. 
 
     
     
       2. The cooling device for the amphibious vehicle according to  claim 1 , further comprising:
 a passage switching portion configured to be able to selectively switch a discharge destination of the coolant having passed through the heat exchanger to any one of the cooling air discharge passage and the cooling water discharge passage. 
 
     
     
       3. The cooling device for the amphibious vehicle according to  claim 2 ,
 wherein the passage switching portion includes: 
 an opening communicating between the cooling air discharge passage and the cooling water discharge passage; 
 a diaphragm attached to the opening from a side close to the cooling water discharge passage; and 
 a biasing member that elastically biases the diaphragm toward the opening. 
 
     
     
       4. The cooling device for the amphibious vehicle according to  claim 1 ,
 wherein the cooling air discharge passage has a fan provided closer to a downstream side than a branch point between the cooling water discharge passage and the cooling air discharge passage. 
 
     
     
       5. The cooling device for the amphibious vehicle according to  claim 1 ,
 wherein a downstream side of the cooling air discharge passage in relation to a branch point between the cooling water discharge passage and the cooling air discharge passage is located above a waterline of the amphibious vehicle. 
 
     
     
       6. The cooling device for the amphibious vehicle according to  claim 1 ,
 wherein a propulsion device that generates a propulsion force using the cooling water having passed through the heat exchanger is disposed in the cooling water discharge passage. 
 
     
     
       7. The cooling device for the amphibious vehicle according to  claim 6 , further comprising:
 a bypass passage that communicates with the coolant introduction passage and the cooling water discharge passage, 
 wherein a portion of the coolant flowing through the coolant introduction passage can be supplied to the propulsion device through the bypass passage without passing through the heat exchanger. 
 
     
     
       8. The cooling device for the amphibious vehicle according to  claim 1 , further comprising:
 a pump capable of pumping the cooling water to the coolant introduction passage. 
 
     
     
       9. The cooling device for the amphibious vehicle according to  claim 8 , further comprising:
 a spraying portion capable of spraying the cooling water pumped by the pump toward the heat exchanger from an upper side. 
 
     
     
       10. The cooling device for the amphibious vehicle according to  claim 1 ,
 wherein the cooling air discharge passage and the cooling water discharge passage have a shared space provided on a side close to the heat exchanger, and 
 wherein the shared space is configured to be able to store the cooling water by being partitioned by a partition member and has a drain passage through which the stored cooling water can be discharged. 
 
     
     
       11. The cooling device for the amphibious vehicle according to  claim 10 ,
 wherein the partition member extends from a floor of the shared space until reaching a side above the heat exchanger. 
 
     
     
       12. The cooling device for the amphibious vehicle according to  claim 10 ,
 wherein the cooling air discharge portion is provided on a side above the partition member. 
 
     
     
       13. The cooling device for the amphibious vehicle according to  claim 10 ,
 wherein the drain passage is configured such that the drain passage is open at a timing at which the amphibious vehicle switches from a water mode to a land mode whereby the cooling water stored in the shared space is discharged. 
 
     
     
       14. An amphibious vehicle comprising the cooling device according to  claim 1 .